hypermorphic allele - genetic evidence
Deletion of 0.6kb, from site of P{} insertion, 707bp downstream of the Bx cDNA, to within the ARE domain of Bx. The last 226bp of the 3'UTR are missing, including one ATTTA motif, the T stretch, and one Brd-like box.
visible | semidominant
wing
Rank of homozygous phenotype: 7. Rank of heterozygous phenotype: 4-5. (Rank 1 is wild type. Rank 8 is nearly strap like wings.)
Bx4-5 has phenotype, suppressible by Df(1)N19